Turnover former



W. H. BROOKS TURNOVER FORMER Filed Dec. '7, 1953 INVENTOR. du L mM H.9,@00/(5 Ewa.; Adm

United States Patent O TURNOVER FORMER William H. Brooks, San Anselmo,Calif. Application December 7, 1953, Serial No. 396,607

1 Claim. (Cl. 107-1) This invention relates to and in general has forits object the provision of an automatic machine for forming comestibleturnovers.

More specifically, the object of this invention is the provision of aturnover machine of the character above described including: a moldrotatable on a fixed axis and formed with a mold depressioncircumscribed by a marginal flange extending outwardly beyond all otherportions of said mold; a floating, freely rotatable press cylindermounted adjacent said mold in parallelism with said fixed axis. towardsaid mold into fractional driving contact with said mold flange; stopmeans for limiting the transverse movement of said cylinder beyond thelimits of said flange; and means for rotating said mold about said fixedaxis.

The invention possesses other advantageous features, some of which, withthe foregoing, will be set forth at length in the following descriptionwhere that form of the invention which has been selected forillustration in the drawing accompaying and forming a part of the present specification, is outlined in full. In said drawing, one form of theinvention is shown, but it is to be understood that it is not limited tosuch form, since the invention as set forth in the claim may be embodiedin other forms.

Referring to the drawings:

Fig. 1 is a top plan View of a turnover machine embodying the objects ofmy invention with a portion of its frame broken away to betterillustrate its construction.

Fig. 2 is a vertical section of the machine illustrated in Fig. l, takenon the section line 2 2 of Fig. 1 but with a portion of its end coverplate shown in place.

Fig. 3 is a mid-vertical section taken on the section line 3-3 of Fig.1.

Fig. 4 is a fragmentary vertical section taken on the section line 4-4of Fig. 2.

The machine as illustrated in these figures comprises a supporting framegenerally designated by the reference numeral 1, and including a basemember 2 and opposed parallel and identical upstanding end members 3 and4, each provided with an outwardly extending marginal flange 5.

lournalled in bearing bosses 6 formed in the opposed ends 3 and 4 andextending therebetween is a mold shaft 7 and fastened to this shaft byscrews 8 is a mold 9. Formed in the mold 9 is a mold depression 11circumscribed by a marginal flange 12. Formed on the surface of the molddepression 11 immediately adjacent the flange 12 is a C-shaped band ofpiecrust corrugations or crenulations 13 of conventional form. As viewedin plan in Fig. 1, the mold depression 11 takes the form `of anelliptical sector bounded at its inner side by a straight section of themarginal flange 12 in parallelism with the shaft 7. It should also beobserved from Fig. 3 that the radial distance of the flange 12 asmeasured from the axis of the shaft 7 is greater than any other portionof the mold 9 and its associated parts.

Pivoted to each of the frame ends 3 and 4 (see Figs. 2 and 3) by pins 14is a second class lever 15. Formed intermediate the ends of each of thelevers 15 is a bearing boss 16 extending through slots 17 formed in theends 3 and 4. Journalled in these floating coaxial bearing bosses is ashaft 18 and fixed to this shaft in parallelism with the shaft 7 is aright circular press cylinder 19.

Means for biasing said cylinder transversely i 2,719,493 Patented Oct.4, 1955 Fixed to the outer end of each of the levers is a stud 21 andfastened to each of these studs is one end of a coil spring 22, theopposite end of each spring being anchored to its associated frame endplate by a pin 23. It will therefore be seen that the springs serve tobias the press cylinder toward the mold 9 and into contact with itsmarginal flange 12.

Fastened to each of the frame ends in the path of move ment of eachlever 15 is a stop pin 24, the position of these pins being such thatthe press cylinder 19 is preeluded from engaging any portion of the mold9 other than its marginal flange 12.

Keyed to one end of the shaft 7 is a crank 25 provided at its outer endwith an operating handle 26 and fastened to each of the frame endflanges 5 by screws 27 is a cover plate 23.

In operating this device, the operator positions it as shown in Fig. land then places a sheet of dough over the mold with a portion thereofextending over the press roll. A comestible filling is then deposited inthe dough-lined mold depression and this having been done, the mold isrotated (clockwise, as shown in Fig. 3) by the handle 26. Since theflange 12 of the mold is in frictional engage ment with the press rollover substantially of its rotation, the press roll will rotate with themold and in so doing, that portion of the dough sheet covering the pressroll will be folded back over the mold and its filling. Furthermore,theA interaction of the mold flange 12 with the press roll results inpressing and bonding the overlying marginal edges of the dough sheet soas to seal the comestible filling therein. Also, the folded dough sheetwill be trimmed along the marginal flange 12. When the marginal flangehas cleared the press roll, the press roll is free to spin and in doingso, any dough trim adhering thereto will be thrown away from it. Sinceduring the folding, pressing and trimming cycle of the operation, thepress roll or cylinder 19 is held resiliently in contact with the moldflange 12, it exerts a uniform pressure on the dough sheet, therebyuniformly bonding the overlying edges of the dough sheet and forming amarginal edge thereof of uniform thickness.

I claim:

A turnover-forming machine comprising: a supporting frame; a turnovermold journalled in said. frame for rotation on a fixed axis, said moldbeing formed with a depression circumscribed by an outwardly extendingmarginal flange having inner and outer vertical walls which bound acontacting surface which is radially outermost of all other parts ofsaid mold, the configuration of said contacting surface being such thatwhen said mold is rotated about said fixed axis the said contactingsurface of said flange defines a cylindrical surface of revolutionparallel to said axis; a pair of spaced, opposed lever arms pivoted tosaid frame on a common axis parallel to said fixed axis; a presscylinder journalled to and between said lever arms for free rotation ona transversely shiftable axis in parallelism with said fixed axis; meansfor biasing said cylinder towards said mold and into frictionalengagement with said mold flange; stop means for limiting the transversemovement of said cylinder toward said mold beyond a point where saidcylinder is in contact with said mold flange; and means for rotatingsaid mold.

References Cited in the file of this patent UNITED STATES PATENTS 51,539Baker Dec. 19, 1865 546,488 Hessi Sept. 17, 1895 1,236,998 TommasiniAug. 14, 1917 2,001,792 Lombi May 21, 1935 2,227,728 Lombi Jan. 7, 19412,588,454 Abel Mar. 11, 1952

